Camera optical lens

ABSTRACT

A camera optical lens is provided, including from an object side to an image side: a first lens having negative refractive power; a second lens having positive refractive power; a third lens having negative refractive power; a fourth lens having positive refractive power; and a fifth lens having negative refractive power. The camera optical lens satisfies following conditions: −6.00≤f3/f≤−3.70; −3.00≤R2/R1≤−0.80; 2.10≤d6/d8≤6.00; and 3.00≤d3/d4≤12.00. The above camera optical lens may meet design requirements on large aperture, wide angle and ultra-thinness, while maintaining a high imaging quality.

TECHNICAL FIELD

The present invention relates to the technical field of optical lensand, in particular, to a camera optical lens suitable for handheldterminal devices such as smart phones or digital cameras, and imagingdevices such as monitors or PC lenses.

BACKGROUND

With the development of camera technology, camera optical lenses havebeen widely used in various electronic products such as smart phones anddigital cameras. People are increasingly pursuing lighter and thinnerelectronic products in order to facilitate portability, so thatminiature camera lenses with good imaging quality have become amainstream in the market.

In order to obtain better imaging quality, a camera lens traditionallyequipped in a camera of a mobile phone generally constitutes three orfour lenses. However, with development of technology and increase indiversified requirements of users, a camera lens constituted by fivelenses gradually appears in camera design, in case that pixel area ofthe photosensitive device is continuously reduced and requirements onimage quality is continuously increased. Although the common camera lensconstituted by five lenses has good optical performances, itsconfigurations such as refractive power, lens spacing and lens shapestill need to be optimized, therefore the camera lens may not meetdesign requirements for some optical performances such as largeaperture, wide angle and ultra-thinness while maintaining good imagingquality.

Therefore, it is necessary to provide a camera optical lens that maymeet design requirements on large aperture, wide angle andultra-thinness while maintaining good imaging quality.

SUMMARY

In view of the above problems, the present invention provides a cameraoptical lens, which may meet design requirements for large aperture,wide angle and ultra-thinness while maintaining good imaging quality.

Embodiments of the present invention provide a camera optical lens,including from an object side to an image side:

-   -   a first lens having negative refractive power;    -   a second lens having positive refractive power;    -   a third lens having negative refractive power;    -   a fourth lens having positive refractive power; and    -   a fifth lens having negative refractive power;    -   wherein the camera optical lens satisfies following conditions:

−6.00≤f3/f≤−3.70;

−3.00≤R2/R1≤−0.80;

2.10≤d6/d8≤6.00; and

3.00≤d3/d4≤12.00,

-   -   where    -   f denotes a total focal length of the camera optical lens;    -   f3 denotes a focal length of the third lens;    -   R1 denotes a curvature radius of an object side surface of the        first lens;    -   R2 denotes a curvature radius of an image side surface of the        first lens;    -   d3 denotes an on-axis thickness of the second lens;    -   d4 denotes an on-axis distance from an image side surface of the        second lens to an object side surface of the third lens;    -   d6 denotes an on-axis distance from an image side surface of the        third lens to an object side surface of the fourth lens; and    -   d8 denotes an on-axis distance from an image side surface of the        fourth lens to the object side surface of the fifth lens.

As an improvement, the camera optical lens satisfies a followingcondition:

1.00≤(R7+R8)/(R7−R8)≤2.00,

-   -   where    -   R7 denotes a curvature radius of the object side surface of the        fourth lens; and    -   R8 denotes a curvature radius of the image side surface of the        fourth lens.

As an improvement, the camera optical lens satisfies followingconditions:

−5.17≤f1/f≤−1.32;

−1.00≤(R1+R2)/(R1−R2)≤0.13; and

0.03≤d1/TTL≤0.10,

-   -   where    -   f1 denotes a focal length of the first lens;    -   d1 denotes an on-axis thickness of the first lens; and    -   TTL denotes a total optical length from the object side surface        of the first lens to an image plane of the camera optical lens        along an optic axis.

As an improvement, the camera optical lens satisfies followingconditions:

0.51≤f2/f≤1.85;

−0.36≤(R3+R4)/(R3−R4)≤0.06; and

0.06≤d3/TTL≤0.22,

-   -   where    -   f2 denotes a focal length of the second lens;    -   R3 denotes a curvature radius of an object side surface of the        second lens;    -   R4 denotes a curvature radius of the image side surface of the        second lens; and    -   TTL denotes a total optical length from the object side surface        of the first lens to an image plane of the camera optical lens        along an optic axis.

As an improvement, the camera optical lens satisfies followingconditions:

1.50≤(R5+R6)/(R5−R6)≤5.63; and

0.02≤d5/TTL≤0.07,

-   -   where    -   R5 denotes a curvature radius of the object side surface of the        third lens;    -   R6 denotes a curvature radius of the image side surface of the        third lens;    -   d5 denotes an on-axis thickness of the third lens; and    -   TTL denotes a total optical length from the object side surface        of the first lens to an image plane of the camera optical lens        along an optic axis.

As an improvement, the camera optical lens satisfies followingconditions:

0.41≤f4/f≤1.43; and

0.08≤d7/TTL≤0.28,

-   -   where    -   f4 denotes a focal length of the fourth lens;    -   d7 denotes an on-axis thickness of the fourth lens; and    -   TTL denotes a total optical length from the object side surface        of the first lens to an image plane of the camera optical lens        along an optic axis.

As an improvement, the camera optical lens satisfies followingconditions:

−2.49≤f5/f≤−0.70;

1.09≤(R9+R10)/(R9−R10)≤4.08; and

0.04≤d9/TTL≤0.15,

-   -   where    -   f5 denotes a focal length of the fifth lens;    -   R9 denotes a curvature radius of the object side surface of the        fifth lens;    -   R10 denotes a curvature radius of an image side surface of the        fifth lens;    -   d9 denotes an on-axis thickness of the fifth lens; and    -   TTL denotes a total optical length from the object side surface        of the first lens to an image plane of the camera optical lens        along an optic axis.

As an improvement, the camera optical lens satisfies a followingcondition:

FNO≤2.23,

-   -   where FNO denotes an F number of the camera optical lens.

As an improvement, the camera optical lens satisfies a followingcondition:

FOV≥122.00°,

-   -   where FOV denotes a field of view of the camera optical lens.

As an improvement, the camera optical lens satisfies a followingcondition:

TTL/IH≤1.80,

-   -   where    -   IH denotes an image height of the camera optical lens; and    -   TTL denotes a total optical length from the object side surface        of the first lens to an image plane of the camera optical lens        along an optic axis.

The present invention has following beneficial effects: the cameraoptical lens according to the present invention may meet designrequirements for large aperture, wide angle and ultra-thinness whilemaintaining good imaging quality, which is especially suitable formobile phone camera lens components composed of high-pixel CCD, CMOS andother imaging elements and WEB camera lens.

BRIEF DESCRIPTION OF DRAWINGS

Many aspects of the exemplary embodiments may be better understood withreference to following drawings. The components in the drawings are notnecessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present invention. Moreover,in the drawings, like reference numerals designate corresponding partsthroughout the several views.

FIG. 1 is a structural schematic diagram of a camera optical lensaccording to Embodiment 1 of the present invention;

FIG. 2 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 1;

FIG. 3 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 1;

FIG. 4 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 1;

FIG. 5 is a structural schematic diagram of a camera optical lensaccording to Embodiment 2 of the present invention;

FIG. 6 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 5;

FIG. 7 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 5;

FIG. 8 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 5;

FIG. 9 is a structural schematic diagram of a camera optical lensaccording to Embodiment 3 of the present invention;

FIG. 10 is a schematic diagram of a longitudinal aberration of thecamera optical lens shown in FIG. 9;

FIG. 11 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 9; and

FIG. 12 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 9.

DESCRIPTION OF EMBODIMENTS

In order to better illustrate the objectives, technical solutions andadvantages of the present invention, the present invention will bedescribed in further detail below with reference to the accompanyingdrawings and embodiments. It should be understood that the specificembodiments described herein are only used to explain the presentinvention but are not used to limit the present invention.

Embodiment 1

Referring to FIG. 1 to FIG. 4, the present invention provides a cameraoptical lens 10 according to Embodiment 1. In FIG. 1, a left side is anobject side, and a right side is an image side. The camera optical lens10 includes five lenses. The camera optical lens 10 includes: from theobject side to the image side, a first lens L1, an aperture S1, a secondlens L2, a third lens L3, a fourth lens L4, and a fifth lens L5. Anoptical element such as an optical filter GF may be arranged between thefifth lens L5 and an image plane Si.

In this embodiment, the first lens L1 has negative refractive power, thesecond lens L2 has positive refractive power, the third lens L3 hasnegative refractive power, the fourth lens L4 has positive refractivepower, and the fifth lens L5 has negative refractive power.

In this embodiment, the first lens L1, the second lens L2, the thirdlens L3, the fourth lens L4 and the fifth lens L5 are each made of aplastic material. In other optional embodiments, the lenses may also bemade of a material other than the plastic material.

Here, a total focal length of the camera optical lens 10 is defined asf, a focal length of the third lens L3 is defined as f3, a curvatureradius of an object side surface of the first lens L1 is defined as R1,a curvature radius of an image side surface of the first lens L1 isdefined as R2, an on-axis thickness of the second lens L2 is defined asd3, an on-axis distance from an image side surface of the second lens L2to an object side surface of the third lens L3 is defined as d4, anon-axis distance from an image side surface of the third lens L3 to anobject side surface of the fourth lens L4 is defined as d6, and anon-axis distance from an image side surface of the fourth lens L4 to anobject side surface of the fifth lens L5 is defined as d8. The focallength f and the focal length f3, the curvature radius R1 and thecurvature radius R2, the on-axis distance d6 and the on-axis distanced8, and the on-axis distance d3 and the on-axis distance d4 satisfyfollowing conditions:

−6.00≤f3/f≤−3.70   (1);

−3.00≤R2/R1≤−0.80   (2);

2.10≤d6/d8≤6.00   (3);

and

3.00≤d3/d4≤12.00   (4).

Here, the condition (1) specifies a ratio of the focal length f3 of thethird lens L3 to the total focal length f of the camera optical lens 10.Within the range of the condition (1), it is beneficial to improveperformance of the optical system.

The condition (2) specifies a shape of the first lens L1. Within therange of the above condition (2), it is beneficial to balance aspherical aberration, thereby improving imaging quality.

When the ratio of the on-axis distance d6 to the on-axis distance d8satisfy the condition (3), the position of the fourth lens L4 iseffectively configured, thereby facilitating assembling of the lenses.

When the ratio of the on-axis thickness d3 to the on-axis distance d4satisfy the condition (4), it is beneficial to process and assemble thelenses.

A curvature radius of an object side surface of the fourth lens L4 isdefined as R7, and a curvature radius of the image side surface of thefourth lens L4 is defined as R8. The curvature radius R7 and thecurvature radius R8 satisfy a following condition:1.00≤(R7+R8)/(R7−R8)≤2.00, which specifies a shape of the fourth lensL4. Within the range of the above condition, a degree of deflection oflight passing through the lens may be alleviated, and aberrations may beeffectively reduced.

In this embodiment, the object side surface of the first lens L1 isconcave in a paraxial region, and the image side surface of the firstlens L1 is concave in the paraxial region.

The total focal length of the camera optical lens 10 is defined as f,and a focal length of the first lens L1 is defined as f1. The focallength f1 and the focal length f satisfy a following condition:−5.17≤f1/f≤−1.32, which specifies a ratio of the focal length of thefirst lens L1 to the total focal length f of the camera optical lens 10.Within the range of the above condition, the first lens L1 hasappropriate negative refractive power, so that it is beneficial toreduce aberrations of the system and facilitate development ofultra-thinness and wide-angle of the camera optical lens. Optionally,The focal length f1 and the focal length f satisfy a followingcondition: −3.23≤f1/f≤−1.65.

A curvature radius of an object side surface of the first lens L1 isdefined as R1, and a curvature radius of an image side surface of thefirst lens L1 is defined as R2. The curvature radius R1 and thecurvature radius R2 satisfy a following condition:−1.00≤(R1+R2)/(R1−R2)≤0.13. The shape of the first lens L1 is reasonablycontrolled so that the first lens L1 may effectively correct sphericalaberration of the system. Optionally, the curvature radius R1 and thecurvature radius R2 satisfy a following condition:−0.62≤(R1+R2)/(R1−R2)≤0.10.

An on-axis thickness of the first lens L1 is defined as d1, and a totaloptical length from the object side surface of the first lens to animage plane of the camera optical lens 10 along an optic axis is definedas TTL. The on-axis thickness d1 and the total optical length TTLsatisfy a following condition: 0.03≤d1/TTL≤0.10. Within the range of thecondition, it is beneficial to achieve an ultra-thinness effect.Optionally, the on-axis thickness d1 and the total optical length TTLsatisfy a following condition: 0.05≤d1/TTL≤0.08.

In this embodiment, the object side surface of the second lens L2 isconvex in a paraxial region, and the image side surface of the secondlens L2 is convex in the paraxial region.

A total focal length of the camera optical lens 10 is defined as f, anda focal length of the second lens L2 is defined as f2. The focal lengthf and the focal length f2 satisfy a following condition: 0.51≤f2/f≤1.85.The positive refractive power of the second lens L2 is controlled in areasonable range so that it is beneficial to correct aberration of theoptical system. Optionally, the focal length f and the focal length f2satisfy a following condition: 0.82≤f2/f≤1.48.

A curvature radius of an object side surface of the second lens L2 isdefined as R3, and a curvature radius of an image side surface of thesecond lens L2 is defined as R4. The curvature radius R3 and thecurvature radius R4 satisfy a following condition:−0.36≤(R3+R4)/(R3−R4)≤0.06, which specifies a shape of the second lensL2. Within the range of the above condition, as the lens becomesultra-thinness and wide angle, it is beneficial to correct on-axischromatic aberration. Optionally, the curvature radius R3 and thecurvature radius R4 satisfy a following condition:−0.22≤(R3+R4)/(R3−R4)≤0.05.

An on-axis thickness of the second lens L2 is defined as d3, and a totaloptical length from the object side surface of the first lens to animage plane of the camera optical lens 10 along an optic axis is definedas TTL. The total optical length TTL and the on-axis thickness d3satisfy a following condition: 0.06≤d3/TTL≤0.22. Within the range of theabove condition, it is beneficial to achieve an ultra-thinness effect.Optionally, the total optical length TTL and the on-axis thickness d3satisfy a following condition: 0.10≤d3/TTL≤0.17.

In this embodiment, the object side surface of the third lens L3 isconvex in a paraxial region, and the image side surface of the thirdlens L3 is concave in the paraxial region.

A curvature radius of an object side surface of the third lens L3 isdefined as R5, and a curvature radius of an image side surface of thethird lens L3 is defined as R6. The curvature radius R5 and thecurvature radius R6 satisfy a following condition:1.50≤(R5+R6)/(R5−R6)≤5.63, thus a shape of the third lens L3 may beeffectively controlled. Within the range of the above condition, adegree of deflection of light passing through the lens may bealleviated, and aberrations may be effectively reduced. Optionally, thecurvature radius R5 and the curvature radius R6 satisfy a followingcondition: 2.39≤(R5+R6)/(R5−R6)≤4.50.

A total optical length from the object side surface of the first lens toan image plane of the camera optical lens 10 along an optic axis isdefined as TTL, and an on-axis thickness of the third lens L3 is definedas d5. The total optical length TTL and the on-axis thickness d5 satisfya following condition: 0.02≤d5/TTL≤0.07. Within the range of the abovecondition, it is beneficial to achieve an ultra-thinness effect.Optionally, the total optical length TTL and the on-axis thickness d5satisfy a following condition: 0.03≤d5/TTL≤0.06.

In this embodiment, the object side surface of the fourth lens L4 isconcave in a paraxial region, and the image side surface of the fourthlens L4 is convex in the paraxial region.

A total focal length of the camera optical lens 10 is defined as f, afocal length of the fourth lens L4 is defined as f4. The focal length fand the focal length f4 satisfy a following condition: 0.41≤f4/f≤1.43,which specifies a ratio of the focal length f4 of the fourth lens L4 tothe focal length f of the camera optical lens 10. With appropriateconfiguration of the refractive power, the system may obtain betterimaging quality and lower sensitivity. Optionally, the focal length fand the focal length f4 satisfy a following condition: 0.66≤f4/f≤1.14.

An on-axis thickness of the fourth lens L4 is defined as d7 and a totaloptical length from the object side surface of the first lens to animage plane of the camera optical lens 10 along an optic axis is definedas TTL. The on-axis thickness d7 and the total optical length TTLsatisfy a following condition: 0.08≤d7/TTL≤0.28. Within the range of thecondition, it is beneficial to achieve an ultra-thinness effect.Optionally, the on-axis thickness d7 and the total optical length TTLsatisfy a following condition: 0.13≤d7/TTL≤0.22.

In this embodiment, the object side surface of the fifth lens L5 isconvex in a paraxial region, and the image side surface of the fifthlens L5 is concave in the paraxial region.

A focal length of the fifth lens L5 is defined as f5, and a total focallength of the camera optical lens 10 is defined as f. The focal length fand the focal length f5 satisfy a following condition: −2.49≤f5/f≤−0.70.The limitation on the fifth lens L5 may effectively make the cameraoptical lens have a gentle light angle, thereby reducing tolerancesensitivity. Optionally, the focal length f and the focal length f5satisfy a following condition: −1.56≤f5/f≤−0.87.

A curvature radius of an object side surface of the fifth lens L5 isdefined as R9, and a curvature radius of an image side surface of thefifth lens L5 is defined as R10. The curvature radius R9 and thecurvature radius R10 satisfy a following condition:1.09≤(R9+R10)/(R9−R10)≤4.08, which specifies a shape of the fifth lensL5. Within the range of the above condition, it is beneficial to correctaberration of off-axis angle with the development of ultra-thinness andwide angle. Optionally, the curvature radius R9 and the curvature radiusR10 satisfy a following condition: 1.75≤(R9+R10)/(R9−R10)≤3.27.

An on-axis thickness of the fifth lens L5 is defined as d9, and a totaloptical length from the object side surface of the first lens to animage plane of the camera optical lens 10 along an optic axis is definedas TTL. The on-axis thickness d9 and the total optical length TTLsatisfy a following condition: 0.04≤d9/TTL≤0.15. Within the range of theabove condition, it is beneficial to achieve an ultra-thinness effect.Optionally, the on-axis thickness d9 and the total optical length TTLsatisfy a following condition: 0.07≤d9/TTL≤0.12.

In this embodiment, an image height of the camera optical lens 10 isdefined as IH, and a total optical length from the object side surfaceof the first lens to an image plane of the camera optical lens 10 alongan optic axis is defined as TTL. The total optical length TTL and theimage height IH satisfy a following condition: TTL/IH≤1.80. Within therange of the above condition, it is beneficial to achieve anultra-thinness effect.

In this embodiment, an F number FNO of the camera optical lens 10 isless than or equal to 2.23, so that a large aperture is achieved,thereby obtaining a good imaging quality of the camera optical lens.

In this embodiment, a field of view FOV of the camera optical lens 10 isgreater than or equal to 122.00°, so that a wide-angle effect may beachieved, thereby obtaining good imaging quality of the camera opticallens.

In this embodiment, a total focal length of the camera optical lens 10is defined as f, and a combined focal length of the first lens L1 andthe second lens L2 is defined as f12. The focal length f and thecombined focal length f12 satisfy a following condition:0.65≤f12/f≤2.53. Within the range of the above condition, the aberrationand distortion of the camera optical lens 10 may be eliminated, and aback focal length of the camera optical lens 10 may be suppressed, sothat miniaturization of an imaging lens system may be maintained.Optionally, the focal length f and the combined focal length f12 satisfya following condition: 1.03≤f12/f≤2.03.

In addition, in the camera optical lens 10 provided by this embodiment,the surface of each lens may be configured to be an aspherical surface.The aspherical surface may be easily made into a shape other than aspherical surface, so that more control variables may be obtained toreduce aberrations, thereby reducing the number of lens used. Therefore,a total length of the camera optical lens 10 may be effectively reduced.In this embodiment, each of the object side surface and the image sidesurface of each lens is an aspherical surface.

It is worth mentioning that, since the first lens L1, the second lensL2, the third lens L3, the fourth lens L4, and the fifth lens L5 havethe aforementioned structure and parameter relationship, the cameraoptical lens 10 may appropriately configure the refractive power,spacing and shape of each lens, so that various aberrations arecorrected accordingly.

In this way, the camera optical lens 10 may meet the design requirementsfor large aperture, wide angle and ultra-thinness while maintaining goodoptical performances.

The camera optical lens 10 of the present invention will be describedbelow with examples. The symbols recorded in each example will bedescribed as follows. The focal length, on-axis distance, curvatureradius, on-axis thickness, inflection point position, and arrest pointposition are each in units of millimeter (mm).

TTL denotes a total optical length from the object side surface of thefirst lens to an image plane Si of the camera optical lens 10 along anoptic axis, with a unit of millimeter (mm);

F number FNO denotes a ratio of an effective focal length of the cameraoptical lens to an entrance pupil diameter.

In addition, at least one of the object side surface and image sidesurface of each lens may also be provided with inflection points and/orarrest points in order to meet high-quality imaging requirements. Thedescription below may be referred to in specific embodiments as follows.

The design data of the camera optical lens 10 in FIG. 1 are shown inTablel and Table 2.

TABLE 1 R d nd vd S1  ∞ d0=  −1.149 R1  −3.386 d1=  0.300 nd1 1.5444 v155.82 R2  5.466 d2=  0.805 R3  2.279 d3=  0.727 nd2 1.5444 v2 55.82 R4 −2.096 d4=  0.194 R5  4.811 d5=  0.223 nd3 1.6700 v3 19.39 R6  2.509d6=  0.266 R7  −45.465 d7=  0.965 nd4 1.5346 v4 55.69 R8  −0.915 d8= 0.072 R9  2.009 d9=  0.477 nd5 1.6610 v5 20.53 R10 0.748 d10= 0.651 R11∞ d11= 0.210 ndg 1.5168 vg 64.17 R12 ∞ d12= 0.284

The reference signs in Table 1 are explained as follows.

S1: aperture;

R: central curvature radius of an optical surface;

R1: curvature radius of the object side surface of the first lens L1;

R2: curvature radius of the image side surface of the first lens L1;

R3 : curvature radius of the object side surface of the second lens L2;

R4: curvature radius of the image side surface of the second lens L2;

R5: curvature radius of the obj ect side surface of the third lens L3;

R6: curvature radius of the image side surface of the third lens L3;

R7: curvature radius of the object side surface of the fourth lens L4;

R8: curvature radius of the image side surface of the fourth lens L4;

R9: curvature radius of the object side surface of the fifth lens L5;

R10: curvature radius of the image side surface of the fifth lens L5;

R11: curvature radius of the object side surface of the optical filterGF;

R12: curvature radius of the image side surface of the optical filterGF;

d: on-axis thickness of a lens and an on-axis distance between lenses;

d0: on-axis distance from the aperture S1 to the object side surface ofthe first lens L1;

d1: on-axis thickness of the first lens L1;

d2: on-axis distance from the image side surface of the first lens L1 tothe object side surface of the second lens L2;

d3: on-axis thickness of the second lens L2;

d4: on-axis distance from the image side surface of the second lens L2to the object side surface of the third lens L3;

d5: on-axis thickness of the third lens L3;

d6: on-axis distance from the image side surface of the third lens L3 tothe object side surface of the fourth lens L4;

d7: on-axis thickness of the fourth lens L4;

d8: on-axis distance from the image side surface of the fourth lens L4to the object side surface of the fifth lens L5;

d9: on-axis thickness of the fifth lens L5;

d10: on-axis distance from the image side surface of the fifth lens L5to the object side surface of the optical filter GF;

d11: on-axis thickness of the optical filter GF;

d12: on-axis distance from the image side surface of the optical filterGF to the image plane Si;

nd: refractive index of a d-line;

nd1: refractive index of the d-line of the first lens L1;

nd2: refractive index of the d-line of the second lens L2;

nd3: refractive index of the d-line of the third lens L3;

nd4: refractive index of the d-line of the fourth lens L4;

nd5: refractive index of the d-line of the fifth lens L5;

ndg: refractive index of the d-line of the optical filter GF;

vd: Abbe number;

v1: Abbe number of the first lens L1;

v2: Abbe number of the second lens L2;

v3: Abbe number of the third lens L3;

v4: Abbe number of the fourth lens L4;

v5: Abbe number of the fifth lens L5;

vg: Abbe number of the optical filter GF.

Table 2 shows aspherical surface data of each lens in the camera opticallens 10 according to Embodiment 1 of the present invention.

TABLE 2 Conic coefficient Aspherical surface coefficient k A4 A6 A8 A10A12 R1 3.2774E+00 6.3247E−01 −1.0216E+00 1.7110E+00 −2.2527E+002.1286E+00 R2 1.8430E+00 8.8820E−01 −2.1726E+00 1.0743E+01 −4.2422E+011.1633E+02 R3 −3.0203E+01 1.1550E−01 4.0456E+00 −7.7040E+01 7.5495E+02−4.5835E+03 R4 4.4098E+00 −2.5242E−01 1.1083E+00 −9.0779E+00 5.0220E+01−1.8134E+02 R5 −9.4204E+01 −2.3258E−01 −1.9707E+00 1.5098E+01−6.5209E+01 1.7421E+02 R6 −5.5668E+00 −1.1906E−01 −1.4224E+00 9.1695E+00−3.2177E+01 7.1783E+01 R7 −9.9765E+01 1.9578E−01 −8.0875E−01 2.3507E+00−4.4961E+00 5.5126E+00 R8 −2.0913E+00 1.9628E−01 −5.4414E−01 8.6831E−01−7.6174E−01 3.8799E−01 R9 −3.5261E+00 −2.7184E−01 −4.3735E−02 4.0069E−01−5.4834E−01 4.0929E−01 R10 −3.9544E+00 −2.2976E−01 2.0766E−01−1.3598E−01 6.0181E−02 −1.7894E−02 Conic coefficient Aspherical surfacecoefficient k A14 A16 A18 A20 R1 3.2774E+00 −1.3606E+00 5.5239E−01−1.2830E−01 1.2981E−02 R2 1.8430E+00 −2.0790E+02 2.3210E+02 −1.4665E+023.9613E+01 R3 −3.0203E+01 1.7541E+04 -4.1223E+04 5.4326E+04 −3.0747E+04R4 4.4098E+00 4.2125E+02 −6.1496E+02 5.1382E+02 −1.8715E+02 R5−9.4204E+01 −2.8344E+02 2.6321E+02 −1.2067E+02 1.8146E+01 R6 −5.5668E+00−1.0167E+02 8.8137E+01 −4.2569E+01 8.7725E+00 R7 −9.9765E+01 −4.2880E+002.0538E+00 −5.5487E−01 6.4924E−02 R8 −2.0913E+00 −1.5457E−01 7.3370E−02−2.7011E−02 4.0832E−03 R9 −3.5261E+00 −1.9593E−01 5.9529E−02 −1.0175E−027.3074E−04 R10 −3.9544E+00 3.4401E−03 −3.9604E−04 2.3145E−05 −4.2551E−07

In Table 2, k denotes a conic coefficient, and A4, A6, A8, A10, A12,A14, A16, A18, and A20 denote an aspherical coefficient, respectively.

y=(x ² /R)/{1+[1−(k+1)(x ² /R ²)]^(1/2) }+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶ +A18x ¹⁸ +A20x ²⁰   (5)

Here, x denotes a vertical distance between a point on an asphericalcurve and the optical axis, and y denotes a depth of the asphericalsurface, i.e., a vertical distance between a point on the asphericalsurface having a distance x from the optical axis and a tangent planetangent to a vertex on an aspherical optical axis.

For convenience, the aspherical surface of each lens surface uses theaspherical surface shown in the above formula (5). However, the presentinvention is not limited to the aspherical polynomial form shown in theformula (5).

Design data of the inflection point and the arrest point of each lens inthe camera optical lens 10 according to Embodiment 1 of the presentinvention are shown in Tables 3 and 4. Here, P1R1 and P1R2 denote theobject side surface and image side surface of the first lens L1,respectively. P2R1 and P2R2 denote the object side surface and imageside surface of the second lens L2, respectively. P3R1 and P3R2 denotethe object side surface and image side surface of the third lens L3,respectively. P4R1 and P4R2 denote the object side surface and imageside surface of the fourth lens L4, respectively. P5R1 and P5R2 denotethe object side surface and image side surface of the fifth lens L5,respectively. Data in an “inflection point position” column are avertical distance from an inflexion point provided on a surface of eachlens to the optical axis of the camera optical lens 10. Data in an“arrest point position” column are a vertical distance from an arrestpoint provided on the surface of each lens to the optical axis of thecamera optical lens 10.

TABLE 3 Number of Inflexion point Inflexion point Inflexion pointinflexion points position 1 position 2 position 3 P1R1 2 0.225 1.215 /P1R2 1 0.875 / / P2R1 1 0.485 / / P2R2 0 / / / P3R1 1 0.205 / / P3R2 20.375 0.775 / P4R1 3 0.105 1.105 1.265 P4R2 1 1.115 / / P5R1 2 0.3751.455 / P5R2 2 0.495 2.215 /

TABLE 4 Number of Arrest point arrest points position 1 P1R1 1 0.415P1R2 0 / P2R1 0 / P2R2 0 / P3R1 1 0.345 P3R2 0 / P4R1 1 0.185 P4R2 0 /P5R1 1 0.705 P5R2 1 1.355

In addition, Table 13 below shows numerical values according toEmbodiments 1, 2, and 3 corresponding to parameters specified in theconditions.

As shown in Table 13, Embodiment 1 satisfies various conditions.

FIG. 2 and FIG. 3 are schematic diagrams of a longitudinal aberrationand a lateral color of the camera optical lens 10 after light having awavelength of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm passes throughthe camera optical lens 10, respectively. FIG. 4 is a schematic diagramof a field curvature and a distortion of the camera optical lens 10after light having a wavelength of 555 nm passes through the cameraoptical lens 10. The field curvature S in FIG. 4 is a field curvature ina sagittal direction, and T is a field curvature in a meridiandirection.

In this embodiment, an entrance pupil diameter ENPD of the cameraoptical lens 10 is 0.860 mm, a full-field image height IH is 2.910 mm,and a field of view FOV in a diagonal direction is 123.20°. The cameraoptical lens 10 satisfies design requirements for; large aperture, wideangle and ultra-thinness. The on-axis and off-axis chromatic aberrationsare fully corrected, thereby achieving excellent optical performances.

Embodiment 2

FIG. 5 is a structural schematic diagram of the camera optical lens 20according to Embodiment 2. Embodiment 2 is basically the same asEmbodiment 1, and involves symbols having the same meanings asEmbodiment 1 which are not elaborated here.

Design data of the camera optical lens 20 according to Embodiment 2 ofthe present invention are shown in Table 5 and Table 6.

TABLE 5 R d nd vd S1  ∞ d0=  −1.082 R1  −3.342 d1=  0.333 nd1 1.5444 v155.82 R2  9.983 d2=  0.696 R3  1.931 d3=  0.700 nd2 1.5444 v2 55.82 R4 −2.234 d4=  0.060 R5  4.827 d5=  0.225 nd3 1.6700 v3 19.39 R6  2.409d6=  0.280 R7  −2.388 d7=  0.787 nd4 1.5346 v4 55.69 R8  −0.788 d8= 0.048 R9  1.429 d9=  0.475 nd5 1.6610 v5 20.53 R10 0.661 d10= 0.650 R11∞ d11= 0.210 ndg 1.5168 vg 64.17 R12 ∞ d12= 0.382

Table 6 shows aspherical surface data of each lens in the camera opticallens 20 according to Embodiment 2 of the present invention.

TABLE 6 Conic coefficient Aspherical surface coefficient k A4 A6 A8 A10A12 R1 3.6983E+00 6.2649E−01 −1.0143E+00 1.7114E+00 −2.2524E+002.1279E+00 R2 2.9921E+01 8.8871E−01 −2.1339E+00 1.0661E+01 −4.2501E+011.1662E+02 R3 −1.5301E+01 1.4870E−01 4.2054E+00 −7.6950E+01 7.5531E+02−4.5838E+03 R4 4.2469E+00 −3.1309E−01 1.2636E+00 −9.0806E+00 5.0036E+01−1.8190E+02 R5 −9.0056E+01 −3.1182E−01 −1.8302E+00 1.4941E+01−6.5343E+01 1.7403E+02 R6 −2.1930E−01 −7.7675E−02 −1.4616E+00 9.1521E+00−3.2197E+01 7.1775E+01 R7 −3.7925E+01 2.2370E−01 −7.9184E−01 2.3442E+00−4.5067E+00 5.5140E+00 R8 −2.1399E+00 1.6291E−01 −5.2666E−01 8.7923E−01−7.5896E−01 3.8780E−01 R9 −2.7999E+00 −2.7268E−01 −4.6819E−02 4.0332E−01−5.4714E−01 4.0940E−01 R10 −3.7531E+00 −2.2973E−01 2.0753E−01−1.3620E−01 6.0201E−02 −1.7890E−02 Conic Aspherical surface coefficientcoefficient k A14 A16 A18 A20 R1 3.6983E+00 −1.3611E+00 5.5251E−01−1.2824E−01 1.2979E−02 R2 2.9921E+01 −2.0768E+02 2.3179E+02 −1.4713E+023.9995E+01 R3 −1.5301E+01 1.7539E+04 −4.1242E+04 5.4316E+04 −3.0554E+04R4 4.2469E+00 4.2082E+02 −6.1532E+02 5.1420E+02 −1.8373E+02 R5−9.0056E+01 −2.8420E+02 2.6214E+02 −1.2070E+02 2.2042E+01 R6 −2.1930E−01−1.0166E+02 8.8168E+01 −4.2554E+01 8.7383E+00 R7 −3.7925E+01 −4.2851E+002.0546E+00 −5.5620E−01 6.4849E−02 R8 −2.1399E+00 −1.5505E−01 7.3011E−02−2.7113E−02 4.1852E−03 R9 −2.7999E+00 −1.9602E−01 5.9482E−02 −1.0185E−027.3515E−04 R10 −3.7531E+00 3.4388E−03 −3.9642E−04 2.3120E−05 −4.0098E−07

Design data of the inflection point and the arrest point of each lens inthe camera optical lens 20 are shown in Tables 7 and 8.

TABLE 7 Number of Inflexion point Inflexion point Inflexion pointinflexion points position 1 position 2 position 3 P1R1 2 0.225 1.185 /P1R2 1 0.865 / / P2R1 0 / / / P2R2 0 / / / P3R1 1 0.195 / / P3R2 2 0.4950.845 / P4R1 2 0.395 1.025 / P4R2 1 0.825 / / P5R1 3 0.435 1.445 1.685P5R2 2 0.485 2.155 /

TABLE 8 Number of Arrest point Arrest point arrest points position 1position 2 P1R1 1 0.425 / P1R2 0 / / P2R1 0 / / P2R2 0 / / P3R1 1 0.325/ P3R2 0 / / P4R1 2 0.925 1.085 P4R2 1 1.295 / P5R1 1 0.845 / P5R2 11.365 /

In addition, Table 13 below shows numerical values according toEmbodiment 2 corresponding to parameters specified in the conditions. Itis appreciated that the camera optical lens 20 in Embodiment 2 satisfiesthe above conditions.

FIG. 6 and FIG. 7 are schematic diagrams of a longitudinal aberrationand a lateral color of the camera optical lens 20 after light having awavelength of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm passes throughthe camera optical lens 20, respectively. FIG. 8 is a schematic diagramof a field curvature and a distortion of the camera optical lens 20after light having a wavelength of 555 nm passes through the cameraoptical lens 20. The field curvature S in FIG. 8 is a field curvature ina sagittal direction, and T is a field curvature in a meridiandirection.

In this embodiment, an entrance pupil diameter ENPD of the cameraoptical lens 20 is 0.885 mm, a full-field image height IH is 2.910 mm,and a field of view FOV in a diagonal direction is 122.22°. The cameraoptical lens 20 satisfies design requirements for large aperture, wideangle and ultra-thinness. Its on-axis and off-axis chromatic aberrationsare fully corrected, thereby achieving excellent optical performances.

Embodiment 3

FIG. 9 is a structural schematic diagram of the camera optical lens 30according to Embodiment 3. Embodiment 3 is basically the same asEmbodiment 1, and involves symbols having the same meanings asEmbodiment 1 which are not elaborated here.

Design data of the camera optical lens 30 of Embodiment 3 of the presentinvention are shown in Table 9 and Table 10.

TABLE 9 R d nd vd S1  ∞ d0=  −1.117 R1  −6.121 d1=  0.295 ndl 1.5444 v155.82 R2  5.163 d2=  0.782 R3  2.145 d3=  0.624 nd2 1.5444 v2 55.82 R4 −3.081 d4=  0.185 R5  5.526 d5=  0.225 nd3 1.6700 v3 19.39 R6  3.201d6=  0.187 R7  −4.516 d7=  0.877 nd4 1.5346 v4 55.69 R8  −0.777 d8= 0.087 R9  1.567 d9=  0.416 nd5 1.6610 v5 20.53 R10 0.654 d10= 0.650 R11∞ d11= 0.210 ndg 1.5168 vg 64.17 R12 ∞ d12= 0.349

Table 10 shows aspherical surface data of each lens in the cameraoptical lens 30 of Embodiment 3 of the present invention.

TABLE 10 Conic coefficient Aspherical surface coefficient k A4 A6 A8 A10A12 R1 1.0933E+01 5.6455E−01 −9.7658E−01 1.7156E+00 −2.2541E+002.1260E+00 R2 1.5748E+01 8.8432E−01 −2.4582E+00 1.1143E+01 −4.2338E+011.1653E+02 R3 −1.4613E+01 1.0254E−01 4.0839E+00 −7.6995E+01 7.5540E+02−4.5835E+03 R4 6.3638E+00 −3.2180E−01 1.1547E+00 −9.2596E+00 4.9957E+01−1.8179E+02 R5 −8.2252E+01 −3.2714E−01 −1.8843E+00 1.4858E+01−6.5232E+01 1.7425E+02 R6 −1.6863E+00 −9.1663E−02 −1.4636E+00 9.1554E+00−3.2193E+01 7.1775E+01 R7 −1.7289E+01 2.6616E−01 −7.9402E−01 2.3330E+00−4.5101E+00 5.5147E+00 R8 −2.2238E+00 1.4839E−01 −5.2050E−01 8.8250E−01−7.5830E−01 3.8685E−01 R9 −2.4937E+00 −2.6553E−01 −4.6691E−02 4.0222E−01−5.4748E−01 4.0931E−01 R10 −3.5146E+00 −2.3034E−01 2.0808E−01−1.3641E−01 6.0198E−02 −1.7885E−02 Conic coefficient Aspherical surfacecoefficient k A14 A16 A18 A20 R1 1.0933E+01 −1.3619E+00 5.5188E−01−1.2821E−01 1.3140E−02 R2 1.5748E+01 −2.0815E+02 2.3166E+02 −1.4715E+024.0371E+01 R3 −1.4613E+01 1.7538E+04 −4.1242E+04 5.4318E+04 −3.0546E+04R4 6.3638E+00 4.2108E+02 −6.1487E+02 5.1427E+02 −1.8471E+02 R5−8.2252E+01 −2.8400E+02 2.6208E+02 −1.2074E+02 2.1673E+01 R6 −1.6863E+00−1.0166E+02 8.8170E+01 −4.2551E+01 8.7328E+00 R7 −1.7289E+01 −4.2837E+002.0561E+00 −5.5585E−01 6.3992E−02 R8 −2.2238E+00 −1.5571E−01 7.2623E−02−2.7218E−02 4.3361E−03 R9 −2.4937E+00 −1.9602E−01 5.9484E−02 −1.0181E−027.3571E−04 R10 −3.5146E+00 3.4399E−03 −3.9629E−04 2.3101E−05 −4.0868E−07

Design data of the inflection point and the arrest point of each lens inthe camera optical lens 30 are shown in Table 11 and Table 12.

TABLE 11 Number of Inflexion point Inflexion point inflexion pointsposition 1 position 2 P1R1 2 0.175 1.155 P1R2 1 0.855 / P2R1 2 0.5150.565 P2R2 0 / / P3R1 2 0.185 0.805 P3R2 2 0.365 0.885 P4R1 2 0.3451.015 P4R2 1 0.815 / P5R1 2 0.435 1.475 P5R2 2 0.505 2.155

TABLE 12 Number of Arrest point Arrest point arrest points position 1position 2 P1R1 1 0.305 / P1R2 0 / / P2R1 0 / / P2R2 0 / / P3R1 1 0.305/ P3R2 2 0.735 0.995 P4R1 2 0.655 1.135 P4R2 0 / / P5R1 1 0.855 / P5R2 11.395 /

In addition, Table 13 below shows numerical values according toEmbodiment 3 corresponding to parameters specified in the conditions. Itis appreciated that the camera optical lens 30 in Embodiment 3 satisfiesthe above conditions.

FIG. 10 and FIG. 11 are schematic diagrams of a longitudinal aberrationand a lateral color of the camera optical lens 30 after light having awavelength of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm passes throughthe camera optical lens 30, respectively. FIG. 12 is a schematic diagramof a field curvature and a distortion of the camera optical lens 30after light having a wavelength of 555 nm passes through the cameraoptical lens 30. The field curvature S in FIG. 12 is a field curvaturein a sagittal direction, and T is a field curvature in a meridiandirection.

In this embodiment, an entrance pupil diameter ENPD of the cameraoptical lens 30 is 0.885 mm, a full-field image height IH is 2.910 mm,and a field of view FOV in a diagonal direction is 122.16°. The cameraoptical lens 30 satisfies design requirements for large aperture, wideangle and ultra-thinness. Its on-axis and off-axis chromatic aberrationsare fully corrected, thereby achieving excellent optical performances.

Table 13 below shows numerical values according to Embodiment 1, 2, and3 corresponding to the above conditions, and values of other relatedparameters.

TABLE 13 Parameters and conditions Embodiment 1 Embodiment 2 Embodiment3 f3/f −4.23 −3.76 −5.96 R2/R1 −1.61 −2.99 −0.84 d6/d8 3.69 5.83 2.15d3/d4 3.75 11.67 3.37 f 1.908 1.965 1.965 f1 −3.782 −4.544 −5.081 f22.124 2.016 2.417 f3 −8.072 −7.389 −11.711 f4 1.729 1.871 1.616 f5−2.106 −2.449 −2.061 f12 2.826 2.540 3.316 FNO 2.219 2.220 2.220 TTL5.174 4.846 4.887 FOV 123.20° 122.22° 122.16° IH 2.910 2.910 2.910

The above are only preferred embodiments of the present disclosure.Here, it should be noted that those skilled in the art may makemodifications without departing from the inventive concept of thepresent disclosure, but these shall fall into the protection scope ofthe present disclosure.

What is claimed is:
 1. A camera optical lens, comprising from an objectside to an image side: a first lens having negative refractive power; asecond lens having positive refractive power; a third lens havingnegative refractive power; a fourth lens having positive refractivepower; and a fifth lens having negative refractive power; wherein thecamera optical lens satisfies following conditions:−6.00≤f3/f≤−3.70;−3.00≤R2/R1≤−0.80;2.10≤d6/d8≤6.00; and3.00≤d3/d4≤12.00, where f denotes a total focal length of the cameraoptical lens; f3 denotes a focal length of the third lens; R1 denotes acurvature radius of an object side surface of the first lens; R2 denotesa curvature radius of an image side surface of the first lens; d3denotes an on-axis thickness of the second lens; d4 denotes an on-axisdistance from an image side surface of the second lens to an object sidesurface of the third lens; d6 denotes an on-axis distance from an imageside surface of the third lens to an object side surface of the fourthlens; and d8 denotes an on-axis distance from an image side surface ofthe fourth lens to the object side surface of the fifth lens.
 2. Thecamera optical lens as described in claim 1, wherein the camera opticallens further satisfies a following condition:1.00≤(R7+R8)/(R7−R8)≤2.00, where R7 denotes a curvature radius of theobject side surface of the fourth lens; and R8 denotes a curvatureradius of the image side surface of the fourth lens.
 3. The cameraoptical lens as described in claim 1, wherein the camera optical lensfurther satisfies following conditions:−5.17≤f1/f≤−1.32;−1.00≤(R1+R2)/(R1−R2)≤0.13; and0.03≤d1/TTL≤0.10, where f1 denotes a focal length of the first lens; d1denotes an on-axis thickness of the first lens; and TTL denotes a totaloptical length from the object side surface of the first lens to animage plane of the camera optical lens along an optic axis.
 4. Thecamera optical lens as described in claim 1, wherein the camera opticallens further satisfies following conditions:0.51≤f2/f≤1.85;−0.36≤(R3+R4)/(R3−R4)≤0.06; and0.06≤d3/TTL≤0.22, where f2 denotes a focal length of the second lens; R3denotes a curvature radius of an object side surface of the second lens;R4 denotes a curvature radius of the image side surface of the secondlens; and TTL denotes a total optical length from the object sidesurface of the first lens to an image plane of the camera optical lensalong an optic axis.
 5. The camera optical lens as described in claim 1,wherein the camera optical lens further satisfies following conditions:1.50≤(R5+R6)/(R5−R6)≤5.63; and0.02≤d5/TTL≤0.07, where R5 denotes a curvature radius of the object sidesurface of the third lens; R6 denotes a curvature radius of the imageside surface of the third lens; d5 denotes an on-axis thickness of thethird lens; and TTL denotes a total optical length from the object sidesurface of the first lens to an image plane of the camera optical lensalong an optic axis.
 6. The camera optical lens as described in claim 1,wherein the camera optical lens further satisfies following conditions:0.41≤f4/f≤1.43; and0.08≤d7/TTL≤0.28, where f4 denotes a focal length of the fourth lens; d7denotes an on-axis thickness of the fourth lens; and TTL denotes a totaloptical length from the object side surface of the first lens to animage plane of the camera optical lens along an optic axis.
 7. Thecamera optical lens as described in claim 1, wherein the camera opticallens further satisfies following conditions:−2.49≤f5/f≤−0.70;1.09≤(R9+R10)/(R9−R10)≤4 .08; and0.04≤d9/TTL≤0.15, where f5 denotes a focal length of the fifth lens; R9denotes a curvature radius of the object side surface of the fifth lens;R10 denotes a curvature radius of an image side surface of the fifthlens; d9 denotes an on-axis thickness of the fifth lens; and TTL denotesa total optical length from the object side surface of the first lens toan image plane of the camera optical lens along an optic axis.
 8. Thecamera optical lens as described in claim 1, wherein the camera opticallens further satisfies a following condition:FNO≤2.23, where FNO denotes an F number of the camera optical lens. 9.The camera optical lens as described in claim 1, wherein the cameraoptical lens further satisfies a following condition:FOV≥122.00°, where FOV denotes a field of view of the camera opticallens.
 10. The camera optical lens as described in claim 1, wherein thecamera optical lens further satisfies a following condition:TTL/IH≤1.80, where IH denotes an image height of the camera opticallens; and TTL denotes a total optical length from the object sidesurface of the first lens to an image plane of the camera optical lensalong an optic axis.